MESOSCALE FUNCTIONS OF GPS SLANT DELAY

Abstract

The paper presents a computer module for GPS slant delay determination using data from COAMPS (Coupled Ocean/Atmosphere Mesoscale Prediction System) mesoscale non-hydrostatic model of the atmosphere which is run on IA64 Feniks computer cluster in the Department of Civil Engineering and Geodesy of the Military University of Technology. The slant delay is the result of integrating the ray (eikonal) equation for the spatial function of tropospheric refraction along theGPS wave propagation path. The work is a phase of research concerning operational methods of GPS slant delaydetermination using data from mesoscale non-hydrostatic models of the atmosphere, like COAMPS of the Naval ResearchLaboratory (NRL) and the Weather Research and Forecasting (WRF).